Headache-post control for electric oil-well equipment



Dec. 13, 1927 1,652,311

. J. H. LE GRAND HEADACHE POS T CONTROL FOR ELECTRIC OIL WELL EQUIPMENT Filed Jan.5. 1927 2 Sheets-Sheet l INVENTOR. John H. LeGrancZ BY zg /w A TTORNE Y.

Dec. 13, 1927. 1,652,311

' J. H. LE GRAND HEADACHE POST CONTROL FOR ELECTRIC OIL WELL EQUIPMENT Filed Jan.5. 1927 2 Sheets-Sheet 2 17 E La 12 1 2 11 1 3 FIG- 6 INVENTOR.

John H. Le Grand A TTORNE Y.

Patented Dec. 13, l ilill'ihi fi'ii'A'l'Efi PATENT OFFlCE.

JOHN H. LE GRAND, GF ELDOEADO, KANSAS.

ELEGTREG OIL-'WELL EQUIPMENT.

CSNTRGL Ti? Application filed January 3, 1927'. Serial Ito. 1553, 896.

My invention relates to a headache post sheave 5 having a cable 6 wound thereon X- control for electric oil well equipment. tending to and engaging on a sheave as The objects oi my invention as follows: operating means for the controller 8. Into st: To provide a headache pest control gral with the hub of sheaveb is asleeve 9 on so I? for double rated twin motor oil well drilli which is rotatably mounted a sheave 1O havequipment which incorporat s a mechanic ing wound thereon a cable 11 which extends arrangement that prevents the change or to and engages on a sheave 12 as operating motor winding connections by means the means for a controller 13. ltotatably mountpole changing switch from one rating and on on the spindle l is a sheave 14 having us speed to the other rating and speed, except wound thereon a cable 15, the said cable en at the oil? position of the motor control aptending to and engaging on a sheave '16 as paratus, thereby eliminating the destructive operating means for the pole changing switch arcing at the contact lingers oi the pole 1?. changing switch and also reducing the chances The hub of the sheave 14 is provided with 'H of abusive operation of the motors and their a plurality oi radially extending teeth to encontrol. gage with the radially positionedteeth of the Second: To provide headache post con. flange 3 functioning as a clutch tor a selected trol mechanism which will permit the change position of the sheave let, the said sheave of rotor circuit control oi the individual being manipulated by an arm 18 rigidly at- Y 2c motors applied, that is to say, an increase tached thereto and'radially extending thereor decrease or rotor circuit resistance of one from. motor with respeetito the other by means of As a separating means for the said toothed one lever. members I have provided a helical spring 19 These and other objects will hereinafter be housed within the hub of sheave M as shown 25 more fully explained. in 2. The said spring contacting the Referring to the drawings: flange 3 and the base of the housing and being Fig. 1 is a side view of the controller. wound around the spindle is free to rotate 2 is a cross sectional view of Fig. 1; with the sheave or remain stationary with Fig. 3 is a transverse view of Fig.1 showthe flange. so inp; the clutch engaged for the operation of Positioned between the hubs oiithe sheaves th trollersn A 10 and 14: is a washer 2O keyed to and slidably Fig. d is a View taken along line IV'IV engaging longitudinally on the spindle l. as in 2. shown in Fig. 8. The said washer has a Fig. is a view taken along the line V-V radially positioned curvature 21 in one side on 3:; in 2. thereof to receive an extension22 and a simi- Fig. 6 is a diagrammatical plan view of an lar extension 22 on the extended portion oil well rig showing the motors and con- 9 of the hub of sheave 5. The said extent-rollers operatively positioned. sions co-ineiding with the curvature function Fig. 'l is an elevation of Fig. 6 as can s, the said cams function by rotating 95 4c Fig. 8 is a detail view of the mounting the sheaves 5 and simultaneously or sepscheme of the cam collar on the supporting arately sliding the sheave i l longitudinally spindle. on the spindle to engagement with the said illig. 9 is a detailed view of the hub oi toothed members as shown in Fig. 3. sheave 5. Positioned between the hubs otl' sheaves 5 ice 5 The mechanism herein disclosed consists of and 10 is a lever having an eye rotatably a spindle l, rigidly connected to what is engaging on the extension 9 of sheave 5 as known in the oil fields as a headache postQ shown at E in 2. Positioned on oppowhich is a part of the rig andin close pron site sides of he lever are housings 2a and 25, iinity to the well. The said spindle has a the said housings having spring actuated 105 toothed flange 3 integral therewith and funcpawls 26 and 27 to engage in notches 28 and tions a bearing against the side of said 29 in the adjacent ends of the hubs of sheaves post and held firmly thereto by means of a 5 and 10. The said pawls are reciprocated nuti threadedly engaging on the end eXtendby rods 30 and 31 which are connected to I ing through the post as shown in Figs. 2 pivotally mounted grips 32 and 33 by which iii) and means the sheaves 5 and 10 may be rocked Rotat bly mounted on the spindle is a simultaneously or independent of each other all of said wheels being held in proper working position by a nut 34. threadedly engaging thereon.

To operate the controllers herein disclosed will be as follows The current will be neutralized by placing the sheaves 5 and 10 relative to each other as shown in Figs. and 2, at which time the sheave 14 is disengaged by aligned registry of the cam members separating the hub of sheave 14; by the medium of the said spriw 19 from the toothed flange 3 making it p ble to rock said wheel as desired. lVhen said wheel is rocked by drawing the arm L8 in the direction of the arrow A the rating 01": the pole switch 17 is reduced. Then by rocking the sheaves 5 and 1.0 by the medium of the lever 23 in the direction of the arrow C the clutch mechanism of sheave 14- is en gaged at which time the controllers S and 13 are simultaneously operated starting the motors 7 and 1:2 with a gradual increased speed. To reverse the motors the said lever 23 will be rocked in the direction of the arrow D gradually increasing the speed in a reverse direction, but prior to this move ment the current will be neutralized as before stated.

It will be understood that the control ,onsists of a sheave 14 as variable rating or changing of poles by rocking the arm as indicated by the arrows A and B. The sheaves 5 and 10 function as actuating means for variable speed and reversing the motors.

To vary the speed either one of the sheaves 5 or 10 may be moved independent of the other to acquire a desired speed. Then by rocking both of said sheaves simultaneously the speed is made to increase or decrease, this capacity being required in drilling an assen oil well when. strata of: different texture are encountered, and diiierent speed of the drill bit is required to meet the condition. t is also usctul in different (merations such as bailing, swabbing, pnnu'iing or drawing the casing.

Such mmlilications may be employed as lie within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a headache post control. for electric oil well equipment, the combination of a headache post and a spindle attached thereto, a pair of sheaves rotatably mounted on said spindle, cables wound on said sheaves ex tending to and engaging with a pair oi electric controllers, means to rotate the sheaves separately or simultaneously to control the electric current, a third sheave rotatably mounted on the said spindle, a. cable wound on said sheave, said cable extending to and engaging with a pole changing switch and means to rotate the said sheave for variable rating.

2. In a headache pest control for electric oil. well equipment, the combination of an oil well derrick, of an electric power system, of a controlling means rotatably carried on a single pin attached to the derrick, the said controlling means comprising a variable speed and neutralizing means operated by a single lever and a variable rating controlling means operated by a single lever, and a locking means for a variable rating means until first said means is placed on neutral, or the electric current broken thereby.

In testimony whereoi I aflix my signature.

JOHN H. LE o air n. 

